Omron NT31 Operation Manuals page 129

Connecting to the Host's RS-422A/485 Port
118
C1000H/C2000H rack-mounting type: 3G2A5-LK201-EV1
[Setting the front switches]
Mode
selector
Host Local
@ Mode selector (key switch)
Set this to "Host link".
[Setting the rear switches]
I/O port
RS-422A
RS-232C
Synchronization
Internal
External
Terminator
OFF
ON
CTS
0V
External
@ I/O port selection (selector switch)
Set this to "RS-422A".
8
7
6
SW1
@ Unit # (DIP SW1)
5
4
Set SW1-1 to SW1-5 to "OFF" ("0").
3
2
1
ON
@ Synchronization (selector switch)
Set this to "Internal".
8
7
6
SW2
@ Communications speed
5
4
(DIP SW2-1 to SW2-4)
3
2
Set these switches to "0010" to select
1
19200 bps.
ON
Set these switches to "1010" to select
9600 bps.
(0: OFF 1: ON)
@ 1-to-1/1-to-N selection (DIP SW2-6)
Set SW2-6 to "OFF" ("0") (1-to-N).
@ Instruction level (DIP SW2-7, SW2-8)
Set these switches to "ON" (1).
(Levels 1, 2, and 3 are enabled.)
@ CTS selection (selector switch)
Set this always to "0V" (ON).
@ Terminator setting (selector switch)
Set this switch to "ON".
Section 5-2